import java.util.Scanner;
public class test_3_5 {
    public static void main1(String[] args) {
        double i = 50.0;
        double k = i + 50.0;
        double j = k + 1;
        System.out.println("j is " + j + " and k is " + k);
    }

    public static void main2(String[] args) {
        Scanner input = new Scanner(System.in);
        double radious = input.nextDouble();
        System.out.println(radious);
    }

    public static void main3(String[] args) {
        final int miles = 100;
        final double KiL = 1.609;
        double kilometers = miles * KiL;
        System.out.println(kilometers);
    }
    public static void main4(String[] args){

        System.out.println(Math.pow(2, 3.5));
    }
    public static void main5(String[] args){
        int a = 1;
        int j = 5;
        float ret = (float)a * (float)j *(float)j;
        System.out.println(ret);
    }
    public static void main6(String[] args){
        long time = System.currentTimeMillis();
        long second = time / 1000;
        long minute = second / 60;
        long hours = minute / 60;
        second %= 60;
        minute %= 60;
        hours %= 24;
        hours += 8;
        System.out.println("现在时间是" + hours + ':' + minute + ':' + second);

    }

    public static void main(String[] args) {
        double a = 6;
        a /= 2;
        double b = 0;
        System.out.println(a);
        a = b = a = 1.0;
        System.out.println(a);
        System.out.println(b);
    }
}



